Home / 23,122.81-31,909.57-12,512.45

Finding the Fourth Proportional to 23,122.81, 31,909.57 and 12,512.45

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Solution

The fourth proportional to 23,122.81, 31,909.57 and 12,512.45 is: 17,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,122.81 : 31,909.57 = 12,512.45 : x
  2. Step 2: Convert to fraction form
    23,122.81/31,909.57 = 12,512.45/x
  3. Step 3: Cross multiply
    23,122.81x = 31,909.57 × 12,512.45
  4. Step 4: Simplify right side
    23,122.81x = 399,266,768.15
  5. Step 5: Solve for x
    x = 399,266,768.15/23,122.81
  6. Step 6: Final answer
    x = 17,267.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.